Mule stop-motion.



A. R. LAYMAN.

MULE STOP MOTION. APPLlCATlON FILED MAY 28. 1915.

Patented May 8, 1917.

7' L ha/41:

will? ARTHUR RANDOLPH LAYIVEAN, OF DOVER, NEW HAMPSHIRE.

MULE STOP-MOTION.

Specification of Letters Patent.

Patented May S, 1917.

Application filed May 28, 1915. Serial No. 30,974.

To all whom it may concern:

Be it known that I, ARTHUR R. LAYMAN, a citizen of the United States,residing at Dover, in the county of Strafford and State of NewHampshire, have invented certain new and useful Improvements in MuleStop- Motions; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The invention relates to improvements in mule stop motion.

The object of the present invention is to improve the construction ofmule stop motion more especially that shown and described in anapplication filed by me August 26th, 1913, Serial #786,912 and toprovide a simple, practical, and comparatively inexpensive constructionadapted to eliminate the mechanism for operating a draft clutch forconnecting the draft scroll with the shaft on which it is mounted andcapable of enabling the shipper lever to be instantly operated wheneither the upper or lower flight or stretch of the draft rope breaks orslackens whereby the driving belt will be thrown from the driving pulleyto the loose pulley and the machine stopped.

With these and other objects in view the invention consists in theconstruction and novel combination and arrangement of parts hereinafterfully described, illustrated in the accompanying drawings and pointedout in the claims hereto appended, it being understood that variouschanges in the form, proportion and minor details of construction may beresorted to without departing from the spirit or sacrificing any of theadvantages of the invention.

In the drawing Figure l is a perspective view of a stop motionconstructed in accordance with this invention, and shown applied to aportion of a spinning mule, 1

Fig. 2 is a detail sectional view illustrating the arrangement of thecam arm for tripping the device for actuating the shipper lever Fig. 3is a detail sectional view on the line 3-3 of Fig. 2.

Like numerals of reference designate corresponding parts in the severalfigures of the drawing.

In the accompanying drawing in which is illustrated the preferredembodiment of the invention, 1 designates a front transverse rock shaftjournaled in suitable bearings 2 and provided at one end with a segment3 or segmental arm having a grooved periphery and secured to one end ofa chain 1; or other suitable flexible connection. The chain extendsunder a guide roller 5 and around a vertically disposed guide roller orwheel 6 and is connected at its rear end to the lower end of an uprightshipper lever 7. The shipper lever 7 which is pivoted at a pointintermediate of its ends at 8 on the frame 9 of a spinning mule isprovided at its upper end with a loop 10 adapted to receive a belt, notshown, and capable of shift ing the same from a driving pulley 11 to aloose pulley 12.

The driving belt, not shown, is designed to be arranged in the usualmanner and is shiftable from the driving pulley 11 to the loose pulley12 to start and stop the machine. The horizontal and vertical guiderollers or wheels 5 and 6 are mounted in suitable brackets and the fronttransverse rock shaft 1 has disposed on it a coiled spring 1a secured atone end 13 to the floor or other fixed point and connected at its otherend by a set collar 15 with the shaft 1 and adapted to be placed undertension when an arm 16 of the shaft is swung rearwardly to the positionillustrated in Fig. 1 of the drawing. The arm 16 is maintained in thisposition while the machine is in operation by a latch 17 and is adaptedto be released to permit the spring 14: to swing the arm 3 forward andactu'ates the shipper lever to stop the machine. The latch 17 which ismounted on a horizontal pivot 18 of a stand 19 is approximately L-shaped and one arm extends upwardly and is provided with a hook 20 whichengages over the upper end of the arm 16 as clearly shown in Fig. 2 ofthe drawing. The other arm 21 extends rearwardly and is provided withlateral projections 22 and 23 adapted to be engaged by arms or levers 25and 26 for oscillating the latch to trip the mechanism for actuating theshipper lever. The lever 25 which is pivotally mountedon the horizontalpin or pivot 18 extends rearwardly from the latter and is located abovethe lateral projection 22' and it is provided at its rear end with alaterally extending pivot 27 on which is mounted a pulley 28 arranged onthe lower flight or stretch 29 of a draft rope 30. The lever 25 isconnected at a point intermediate of its ends with a contractile spring31 and the latter is placed ranged on the said lower flight or stretch29 of the draft rope whereby when the draft rope brakes or slackens atthe lower flight or stretch 29 the spring 31 will actuate the lever 25and cause the same to withdraw the latch from engagement with the arm 16of the front transverse rock shaft 1, to stop the machine.

The draft rope 30 passes over a draft scroll 32 and its upper flight orstretch 33 engages a pulley 34 of an arm 35 of a crank shaft 36journaled in suitable bearings of brackets 37" and provided at one endwith a crank 87 having a pin 38 operating in a slot 39 of a rod 4L0. Therod l0 extends upwardly from an arm 41 of a lower rock shaft and thecrank shaft has disposed on it a coiled spring 13 secured to the shaftat one of its ends by a set collar 4L4; and connected at its other endto one of the brackets 37 and placed under tension and held normally soby the upper flight or stretch of the draft 'rope whereby when the saidupper [light or stretch breaks or slackens the crank shaft will bereleased and its arm 35 will be swung rearwardly in the direction of theframe and its crank arm swung upwardly to partially rotate the rockshaft 42. The rock shaft 42 is provided at one end with the said arm 41and its other end has an arm L5 which is connected by a rod 46 with thearm 26. The arm 26 is mounted on a horizontal pivot 17 and it is adaptedto actuate the latch lever 17. The arm 26 is provided with a cam 48located above the lateral projection 23 and adapted to engage the sameand withdraw the latch from engagement with the arm 16 when the arm 26is swung rearwardly. lVhile a pair of bracket arms is shown in theaccompanying drawing for mounting the crank shaft, any other suitablebearing may be of course provided for the same.

The latch is normally urged forwardly by a coiled spring 49 disposed onthe pivot 18 and connected at one end with the latch and at the otherend with the stand or bracket 19. The spring will yieldably maintain thelatch in engagement with the arm 16 until the latch is positivelyrel-eased or tripped.

It will be seen that the device is exceedingly simple and inexpensive inconstruction and that when either the upper or lower flight of the draftrope breaks or slackens the shipper lever will be instantly operated toshift the belt from the fast to the loose pulley for stopping themachine. Also it will be clear that the stop motion constitutes a safetydevice and is adapted to enable a workman or other person to throw themachine out of operation by simply disengaging the arm 16 from the latchand that a workman may go beneath the machine or otherwise operate onthe same with perfect safety as it will be positively impossible for themachine to start While the arm 16 is dis engaged from the latch.

\Vhat is claimed is 1. The combination with means for operating ashipper lever including a shaft having an arm, a spring forautomatically rotating the said shaft, a latch normally engaging the armfor holding the shaft against rotation and the said meansout ofoperation, and means adapted to be held normally against movement by theopposite flights of a draft rope, the last mentioned means when releasedbeing arranged to move the latch out of engagement with the said arm topermit the said shaft to rotate.

2. The combination with mechanism for automatically operating a shipperlever including a spring actuated shaft having an arm, a pivoted latchprovided with means for engaging the arm to hold the shaft againstrotation and the shipper lever against movement, a pair of separatelevers arranged to engage the said latch to release the arm and spacedmeans connected with the levers and held against movement by theopposite flights of a d-raft'rope for actuating the said pair of leversto release the latch when the draft rope breaks.

3. The combination with mechanism for automatically actuating a shipperlever including a shaft having an arm, a spring for automaticallyrotating the said shaft, of a latch provided with means for engaging thearm, a lever arranged to swing the latch out of engagement with the arm,a spring for actuating the lever, means for connecting the lever withone of the flights of the draft rope for holding the lever normallyagainst movement, and automatically operable means normally maintainedin an inoperative position by the other flight or stretch of the draftrope for actuating the latch to release the said arm. 7

4. The combination with means for automatically actuating a shipperlever includmg a rotary spring actuated shaft having an arm, a pivotallymounted latch provided with means for engaging the arm, a cam arrangedto move the latch out of such engagement, a crank shaft provided withmeans for engaging one of the flights or stretches of a draft rope andhaving acrank arm, a spring for actuating the crank shaft, a rock shaft,means for connecting the rock shaft with the cam, and a rod extendingfrom the rock shaft and having an opening engaged by the sald crank.

5. The combination of mechanism for automatically actuating a shipperlever including a spring actuated shaft provided with an arm, apivotally mounted approximately L-shaped latch provided at one of itsarms with a hookfor engaging the said arm of the said shaft for holdingthe shipper lever against movement, the other arm of the latch beingprovided With lateral projections, a cam arranged to engage one of theprojections and located at one side of the latch, a lever located at theother side of the latch and arranged to engage one of the saidprojections to trip the latch, said lever being provided With means forengaging one of the flights or stretches of a draft rope and meansconnected With the cam for engaging the other flight or stretch of thedraft rope.

6. .The combination of mechanism for automatically actuating a shipperlever including a shaft having an inclined arm, an approximatelyL-shaped latch having a pivot and fulcrumed at its angle, said latchbeing provided at one of its arms with a hook en gaging the arm of thesaid shaft for holding the shipper lever against movement, the other armof the latch being provided With lateral projections extending from theopposite faces of the said latch, a pair of levers located at oppositesides of the latch, one of the levers being mounted on the pivot of thelatch and arranged to be engaged With one of the lateral projections,the other lever being provided With a cam arranged to engage the otherlateral projection, a spring for actuating the lever that is mounted onthe pin of the latch, means carried by such lever for engaging the lowerflight of a draft rope, a spring actuated crank shaft having an armengag ing the upper flight of the draft rope and means for transmittingmotion from the crank shaft to the lever having the cam.

In testimony whereof I aflix my signature in presence of tWo Witnesses.

ARTHUR RANDOLPH LAYMAN.

Witnesses PATRICK H. CONWAY, CHARLES H. Foss.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G."

